Valve for coke-ovens and the like



W. E. ROBERTS. VALVE FOR COKE OVENS AND THE LIKE.

APPLICATION FILED MAR,- 17, I9I9.

Patented July 20, 1920.

, ATTORNEY @Wil/Ihg E. Roberfs UNITED STATES PATENT OFFICE.

WILLIAM E. ROBERTS, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO FOUNDATION OVEN CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

VALVE ronooxn-ovnivs AND THE LIKE.

Application filed March 17, 1919.

T 0 aZZ whom it may concern:

Be it known that I, lVILLIAM E. Ronnn'rs, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Valves for Coke-Ovens and the like, of which the following is a specification.

In my application No. 275,632, I have described a valve for coke ovens adapted to pass air and burnt gases alternatively. The valve of the present invention is for a similar purpose and represents a specific modification of that described in the earlier application.

The accompanying drawings illustrate an embodiment of the invention.

Figure 1 is a plan of the valve and its connections Figs. 2 and 3 are respectively, longitudinal sections thereof on the correspondingly numbered section lines of Figs. 1 and 2;

Figs. l and 5 are horizontal sections on the correspondingly numbered section lines.

The present invention is designed particularly for connection between a regenerator .1 and a flue 2 through which at one time burnt gases are exhausted and carried out of the usual stack and through which at another time fresh air is supplied.

In some styles of oven the fines 2 are used in this way first as exhaust fines for burnt gases and then, by a reversal of valves and generally by an air pump, for the supplying of fresh air. The quantity of air supplied is of course much less in volume than the quantity of burnt gas exhausted from any one section of the oven. For proper regulation of the air supply, it has, for known types of ovens, to be admitted through smaller pipes or passages than are necessary to carry the exhaust. Consequently for the case illustrated the valve has to have a small air supply branch 3 and a large branch 4 for the discharge of burnt gases, in addition to a vertical branch 5 leading to the flue 2. In the air branch 3 is a damper 6 comprising a disk turned on its axis 7 by a handle on the outside for regulating the effective cross-section of the air pipe or branch. Also in the burnt gas pipe or branch 4 is a damper 8 of the sliding type which can be raised or lowered, and held in any desired position of adjustment by a pin Specification of Letters Patent.

Patented July 20, 1920.

Serial No. 283,106.

with the diaphragm 10 a space leading to the air branch 3 and communicating through it with theair port of the regenerator. The two diaphragms 10 and 11 and the top wall 12 of the valve chamber are provided with annular flanges forming sliding hearings in which reciprocates a cylindrical valve body 13 having a closed top 14, an open bottom, and side ports 15 the valve being raised and lowered by means of a rod 16 leading to any usual or suitable operating mechanism, by

which the several valves for the different chambers of an oven are simultaneously operated.

In the position of Figs. 2 and 3 the flue 2 will be on air and the air will be drawn as indicated by the arrows through the bottom of the valve and through the ports 15 into the air branch 3.

lVhen the operation is to be reversed the flue will be put on suction and the valve 13 will be raised to bring the ports 15 into communication with the upper space so that the burnt gases from the regenerator port 4. will pass in the opposite direction through the ports 15 and down into the flue 2.

The valve may be entirely closed, if it is desired to out out entirely the coking chamber to which it belongs, by bringing the body down to an intermediate position so as to bring the ports 15 in line with the flange of the diaphragm 10, leaving the upper and lower spaces closed by the solid portion of the valve body.

Valves of this class, that is for controlling the air and burnt gases from coke ovens, have given considerable difiiculty, being subjected alternately to comparatively cold air and to very hot burnt gases and being subjected to a temperature and to variations of temperature which in the course of time distort it and cause leaks and difliculty in operation. To avoid these difiiculties a great many expedients have been adopted and in many cases two valves have been used, one for merely admitting or cutting oflI' air and the other for admitting or cutting 01'1" the burnt gases from communication with the flue. The various valves used have consequently become complicated in design and expensive to construct and maintain in good order.

The valve of my invention is very simple in design and consequently cheap to manufacture. 'lhe cylindrical bearings can be cheaply and accurately bored and the cylindrieal valve body can be similarly turned to make an easy fit. If any of the parts become distorted the valve body can be lifted directly out and re-turned or its bearings rebored to make a good fit. In the same way easy access is had to the inside of the valve to clean it. 7

Though I have described with great particularity of detail acertain embodiment of my invention, yet it is not to be understood therefrom that the invention is restricted to the particular embodiment illustrated. Various modifications thereof in the details and in the arrangement of the parts may be made by those skilled in the art without departure from the invention as described in the following claims.

What I claim is:

1. An air valve for coke ovens or the like comprising a casing forming two chambers, an air branch communicating with one of said chambers and a burnt gas branch communicating with the other and a cylindrical valve body having an open end in permanent communication with a flue and having a side opening adapted to be shifted to either of two positions in which it opens communication of the flue with said air branch and said burnt gas branch respectively.

2. An air valve for coke ovensor the like comprising-a casing with a horizontal branch (3) communicating with an air port of a regenerator, a horizontal branch (4) communicating with an exhaust port of said regen- 'erator and a depending branch (5) communicating with a flue, said casings having chambers communicating with said branches (3) and (4) respectively and a cylindrical valve in said casing having an open lower end and having a side opening adapted to open communication of the flue with said chambers alternatively.

3. An air'valve for coke ovens or the like comprising a casing having an upper wall (12)., a diaphragm (10) and a lower wall .(11) forming chambers communicating respectively with an air duct and with a burnt my name.

VVILLIAM E. ROBERTS. 

